code: def test_is_empty_condition():
      response = request_with_validation(
          api="/collections/{collection_name}/points/search",
          method="POST",
          path_params={"collection_name": collection_name},
          body={
              "vector": {
                  "name": "image",
                  "vector": [0.2, 0.1, 0.9, 0.7],
              },
              "limit": 5,
              "filter": {"should": [{"is_empty": {"key": "city"}}]},
              "with_payload": True,
          },
      )
  
      assert len(response.json()["result"]) == 2
      for result in response.json()["result"]:
          assert "city" not in result["payload"]
      assert response.ok
  
file_path: qdrant/openapi/tests/openapi_integration/test_basic_retrieve_multivec_api.py
imports: import pytest
  from .helpers.collection_setup import drop_collection, multivec_collection_setup
  from .helpers.helpers import request_with_validation
label_desc: Use image node_id 5 for calling a global function with example usage: test_is_empty_condition() without return types